Plaster reenforcing for curved surfaces



W 0, 1935. E. F. THAYER PLASTER REENFORCING FOR CURVED SURFACES Filed Aug 25 EDD/5 F 77/4 V576 attorney Fatented Apr. 30, 1935 UNITE, srrs PLASTER REENFORCING FOR CURVED SURFACES Eddie F. Thayer, San Diego, Calif.

Application August 23,

4 Glaims.

My invention relates to plaster reenforcing for curved surfaces, such as curved cornered openings, dome ceilings and the like, and the objects of my invention are:

First, to provide a metal reenforcing for curved plastered surfaces made from the conventional expanded metal lath which reenforces the conventional expanded metal lath so that it maintains any curved relation and may be bent and formed to any curve desired;

Second, to provide a reenforcing of this kind which is provided with ribs formed laterally therein crosswise of the conventional expanded metal lath so that it will stretch or may be depressed at the rib portion as well as the main portion for forming any curve desired;

Third, to provide a reenforcing of this class in which the ribs may be positioned against the support for the plaster reenforcement at the ends or intermediate points as desired for strengthening the reenforcement support;

Fourth, to provide reenfcrcement of this class which may be provided withone or a plurality of variously spaced ribs to suit the position the reenforcing is to be placed in, particularly for curved surface plastered walls;

Fifth, to provide a reenforcing of this class which may readily be formed in situ; and

Sixth, to provide a reenforcing of this class which is very simple and economical of construction and operation, easy to apply, provides rigid construction, and which will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawing and to the characters of reference thereon which form a part of this application, in which:

Figure 1 is a perspective view of a partition opening and showing my reenforcing positioned thereon with side reenforcing already for re ceiving the plaster; Fig. 2 is a fragmentary plan view of a section thereof from the line 22 of Fig. 1; Fig. 3 is an end view thereof; Fig. 4. is a perspective view showing a fragmentary reenforcing in position for forming the curved sides of a cove ceiling; Fig. 5 is a sectional View on an enlarged scale through 5--5 of Fig. 4; and Fig. 6 is a perspective view of a fragmentary portion of conventional expanded metal lath with a single reenforcing rib therein.

1932, Serial No. 630,039

(Cl. 72--1l6) Similar characters of reference refer to similar parts and portions throughout the several views of the drawing. 7 7

My invention consists in taking the conventional expanded metal lathing i which is perforated throughout and forming reenforcing ribs la approximately one inch high out of a portion of the material, as shown best in Figs. 3 and 6 of the drawing. In the form for partitions where the partitions are say four or five inches wide, one of these reenforceznents la. is positioned in the middle and extended toward the support against which it is mounted and in most cases adapted to rest against said support, as shown in Fig. 1 of the drawing. Then the side edges are bent back approximately an equal distance against the support for the reenforcing, also as shown in Fig. 1. This can be bent to any radius desired and to form various curves as desired.

Then the side metal of similar or other reenforcing material may be secured against the sides, as shown in Fig. l, and the plastering is then applied and after it sets forms a rigid curved reenforced plastered surface. It being noted that the expanded metal lath is bent transversely so that it will give suficiently to provide the various curves desired because if the ribs were formed lengthwise of the material it would not give suiiiciently to provide the proper curvature.

When it is desired to form the reenforcing for cove ceilings, these ribs are positioned further apart in the metal lathing, say ten or twelve inches apart, depending upon the conditions and length of radius of the curves and the ribs rest against the surface. If desired in this kind of construction, the cove may be set out the depth of the ribs or the ribs may be secured against the supports at the ends forming smooth surfaced flush curved coved ceilings.

It will be-readily seen that various curved surfaces for plaster reenforcing may be formed in situ by so forming ribs in expanded metal lathing of this class and provides a rigid variously formed reenforcing for various purposes as desired.

Though I have shown and described a particular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims. 7

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A plaster reenforcing for curved surfaces comprising, a unit of expanded metal arranged.

with the material thereof defining elongated voids, a rib formed by bending the expanded metal along a plane tranversing the longitudinal axis of the voids in said expanded metal whereby the apex of the rib is yieldable to compensate for the diiference in the radius between the apex of the rib and the normal surface of the expanded metal when the unit is curved.

2. An arch comprising, a unit of expanded metal arranged with the material thereof defining elongated voids, a rib formed by bending the expanded metal along a plane traversing the longitudinal axes of the voids in said expanded metal whereby the apex of the rib is yieldable to compensate for the difierence in radius between the apex of the rib' and the normal surface of the expanded metal when the unit is curved, and a cemental material spread over the expanded metal and forced to the apex of the rib to fix the unit in its curved position.

3. In an arch, the combination with a unit of expanded metal wherein the metal is 'formed with elongated voids so as to be flexible in one direction and relatively stiff in the other directions, of a plurality of ribs formed by bending portions of the expanded metal outwardly from the normal surface thereof along the direction of flexure whereby the apexes of the ribs are yieldable and compensate for the difference in radii of the apexes and the normal surface of the expanded metal when the metal is arched in the direction of fiexure.

4. In an arch, the combination with a unit of expanded metal wherein the metal is formed with elongated voids so as to be flexible in one direction and relatively still in the other directions, of a plurality of ribs formed by bending portions of the expanded metal outwardly from the normal surface thereof along the direction of flexure whereby the apexes of the ribs are yieldable and compensate for the difference in radii of the apexes and the normal surface of the eX- panded metal when the metal is archedin the direction of flexure, and a cemental material spread over the expanded metal and forced to the apexes of the ribs whereby the ribs and expanded metal are fixed in their arched form.

EDDIE F. THAYER.- 

